#!/usr/bin/env python3
# Copyright (c) Facebook, Inc. and its affiliates.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2.

import os
import stat
import subprocess

from .lib import testcase


@testcase.eden_repo_test
class SedTest(testcase.EdenRepoTest):
    def populate_repo(self) -> None:
        self.repo.write_file("hello", "hola\n")
        self.repo.commit("Initial commit.")

    def test_sed(self) -> None:
        filename = os.path.join(self.mount, "sedme")

        with open(filename, "w") as f:
            f.write("foo\n")

        before_st = os.lstat(filename)
        self.assertTrue(stat.S_ISREG(before_st.st_mode))

        subprocess.check_call(["sed", "-i", "-e", "s/foo/bar/", filename])

        after_st = os.lstat(filename)
        self.assertNotEqual(
            after_st.st_ino, before_st.st_ino, msg="renamed file has a new inode number"
        )
        self.assertEqual(4, after_st.st_size)
        with open(filename, "r") as f:
            file_st = os.fstat(f.fileno())
            self.assertEqual(after_st.st_ino, file_st.st_ino)
            self.assertEqual("bar\n", f.read())